Saw an agon post with a 12AU7 chart. There are 4 12AU7’s in the LTA UL amp. Any experimenters with recommendations or thoughts? Thanks
High Resolution / Clear
Detailed / High-End Extension
- 12AU7A RCA clear top
- ECC82=12AU7 Siemens
- 5184A Siemens long plates & triple mica
- 12AU7 Telefunken ribbed plate
- 12AU7 Tungsol
- 12AU7A Sylvania
Lively 3D Mid-range / Good Bass
Mid-range Vocals More Pronounced
Sweet Highs
- 12AU7 Amperex Bugle Boy Holland
- 12AU7 Philips Holland
- 12AU7 Philips Miniwatt Holland
Warm / Smooth / Rich
- 7316 Amperex Holland or
Philips Miniwatt Holland 1959-1963
- 12AU7 RCA Black Plates 1950's (very rich and creamy)
- 12AU7 Mullard (great midrange, good bass)
- 12AU7 Ediswan by Brimar (quiet, detailed, smooth, nice)
- 12AU7 Brimar 1960's
- CV4003 Brimar (very relaxed, quiet, balanced)
Detailed / Articulate / Warm
- 12AU7 Mullard long plates 1950's-60's (best mids, best tonality, best with vocals and instruments)
- CV4003 Mullard Box Plates 1960's
- 12AU7 Telefunken smooth plates
- 12AU7 GE early 1960's
